Automatic vending machine



March 28, 1933. L. P. STARKEY 1,902,

AUTOMATIC VENDING MACHINE Filed Dec. 1, 1930 6 Sheets-Sheet 2 ATTORNEYS,

' March 28, 1933. L. P. STARKEY AUTOMATIC VENDING MACHINE 6 Shets-Sheet 3 Filed Dec. 1, 1930 I N VEN TOR.

f ,4 flaw/M v 4' I.

. ATTORNEYS.

March 28, 1933. 1.. P. STARKEY AUTOMATIC VENDING MACHINE Filed Dec. 1, 1930 6 Sheets-Sheet 4 I N VEN TOR. :%/%7\/ A TTORNEYS.

Mam/M March 28, 1933. L. P. STARKEY 1.9023

AUTOMATIC VENDING MACHINE Filed Dec. 1, 1930 6 Sheets-Sheet 5 I II I I N VEN TOR.

A TTORNEYS.

Vlarch 28, 1933. 1.. P. STARKEY 3 AUTOMATIC VENDING MACHINE Filed Dec. 1, 1930 6 Sheets-Sheet 6 A TTORNE Y5.

Patented Mar. 28, 1933 UNITED STATES LEWIS P.

STARKEY, OF FORT COLLINS, COLORADO AUTOMATIC VENDING MACHINE Application filed December My invention relates to automatic liquid vending machines. The invention is especially adapted for use in connection with an automatic, self-serve, gasoline vending machine.

It is an object of the invention to provide mechanism that will prevent a user from taking gasoline from the machine for an interval of time between the time of stopping a pump that supplies gasoline to a visible, transparent measuring chamber, and the time that all of the excess gasoline in the chamber has flowed therefrom.

A further object is to provide means, in a pump of the character described to break the motor circuit and to drain surplus fluid from the measuring chamber by the intermediary of a customer in the ordinary use of the apparatus.

A still further object is to provide automatic time-controlled means for shutting off the motor, only operable when the motor has run an abnormal length of time, as where some defect or break arises in the system.

Another object is to provide simple and effective mechanism for adjusting the length of a stand pipe or stand pipes for the measuring chamber, whereby to keep abreast of price fluctuations.

Still other objects reside in novel details of construction and in novel combinations and arrangements of parts, which will more fully appear in the course of the following description.

In the drawings, like reference characters designate like parts in the several views.

Figure 1 is an elevation of an automatic pump embodying the present invention.

Figure 2 is an elevation of the pump looking in the direction of the arrow A of Figu e 1, the pump housing being broken away.

Figure 3 is an enlarged vertical section of the upper portion of the machine.

Figure 4' is a still further enlarged, vertical, broken section of one of the stand pipes comprised in the invention.

'Figure 5 is a vertical section of the lower part of Figure 3, taken at right angles to the 0 view given in the latter figure.

1, 1930. Serial No. 499,321.

Figure 6 is an enlarged section taken on the line 6-6 of Figure 5.

Figure 7 is an enlarged elevation taken on the line 7-7 of Figure 6.

Figure 8 is a section taken on the line 8-8 of Figure 7.

Figure 9 is an enlarged elevation taken on the line 9-9 of Figure 6.

Figure 10 is a partly broken section taken at right angles to the line 10-10 of Figure 3.

Figure 11 is a section taken on the line 11-11 of Figure 10.

Figure 12 is a detail taken on the line 12-12 of Figure 6.

Figure 13 is a wiringdiagram of the circuits employed in the machine.

Figure 14 is an enlarged sectional elevation taken on the line 14-14 of Figure 9.

Figure 15 is a vertical section on the line 15-15 of Figure 16, showing coin contacts and associated parts comprised in the invention. I

Figure 16 is a section taken on the line 16-16 of Figure 15. p

Figure 17 is an enlarged elevation, partly in section, of a detail comprised in the invention.

Figure 18 is a section taken on the line 18-18 of Figure 17 Referring more specifically to the drawings, the reference numeral 2 designates a housing for a motor 3, and a pump 4 driven by the motor. The housing has a removable panel 5 closing an open side. A handle6 controls a latch (not shown) for the panel.

Supported on the housing 2 are three pipes 7, 8 and 9. The pipe 7 connects with the pump 4 and receives the liquid drawn by the pump through a supply pipe 10 from a source of liquid (not shown). The pipe 9 is a return pipe, emptying gasoline back into the source of supply. A pipe 12 on the housing encloses Wiring comprised in the apparatus.

The pipes 7 8, 9 and 12 on the housing support a casing 13 and ameasuring'cham ber 14 preferably in cylindrical form and made of transparent material.

Upper and lower sections 161 and 162 of the casing have shoulders for a flexible, overlapping plate 163 held in place by a clamp consisting of apertured lugs 164 on adjacent portions of the plate and a bolt 165 connecting the lugs.

A cap member 41 is mounted on the walls of the chamber 14 and held in place by tie rods 16 around the chamber. The tie rods have threaded ends screwed into threaded apertures 17 in the casing, and nuts 18 hold the opposite ends of the tie rods in place in apertures in the cap member. Suitable gaskets 19 may be disposed at the upper and lower edges of the walls of the chamber, to

afford air-tight joints respectively with the cap and with the casing. A dome 15 is mounted on the cap member.

A plurality of stand-pipes 20, 21 and 22 of different heights are provided in the measuring chamber, and empty into a float chamber 51. The upper ends of the pipes are open to provide overflows from the chamber. The overflows are controlled by outlet valx 'es, hereinafter more full described. The pipes have adjustable telescoping sections 23, 24

and 25 respectively. The adjusting means for the sections includes yokes 26, 27 and 28 at the upper ends of the respective sections. The yokes have screw-threaded apertures for reception of threaded ends of suspended rods 29, 30 and 31 respectively. The opposite ends of the rods carry bevel gears 32, 33 and 34 respectively.

Stub shafts 35, 36 and 37 carry bevel gears 38, 39 and 40v respectively, meshing with the first noted bevel gears. The shafts project throu h perpendicular walls of the cap 41. The s iafts carry slotted heads 42 on their pro ecting portions. Packing glands 43 pro vide fluid tight joints between the shafts and the cap. A plate 44 bolted within the cap extends over the measuring chamber to provide bearings 45 for the shafts and ail'ords a bearing for the suspended rods. The dome has an aperture 46 opposite each slotted head, for the insertion of a tool, whereby to adjust the stand-pipes.

I Each telescoping section has a collar 47, best shown in Figure 4, that has an aperture 48. A slide rod 49 is mounted in a bushing 50 that holds the stand-pipe in place in its respective outlet. The slide rod 49 extends through the aperture 48 and prevents the telescoping section from turning during adjustment.

stand-pipe 52 continuously connected with the float chamber is also provided in the measuring chamber. It is preferably fixed to measure ten (10) gallons in the measuring tank, or any other arbitrary amount. It is higher than the adjustable stand-pipes. A telescoping section 132 is held in the desired position on the pipe 52 by means of a clampin%band 133.

auges 53 are provided at either side of the measuring chamber on vertical bars 134 in the measuring chamber. Spring clips 135 maintain the gauges in desired positions on the rods. The gauges indicate the amount in the measuring tank by gallons, liters, or other unit of measure. An inlet pipe 136 rises in the measuring chamber above the other stand pipes. A spaced shell 137 provides a passage around this inlet pipe. This arrangement prevents the incoming gasoline from boiling that already in the chamber, and causes the level of the gasoline to rise evenly.

Each of the stand pipes in the measuring chamber (with the exception of the lO-gallon pipe 52 and the inlet pipe 136) has a plurality of passages 195, which also extend through the bushings 50, connecting the interior of the stand pipes with the measuring chamber at the level of the chamber floor. These passages drain the liquid from the stand pipes into the measuring chamber, so that liquid in the pipes will not be withheld when the customer takes his gasoline from the measuring chamber.

A float 54 is disposed in the float chamber 51. The float has a hollow stem 55 that rides on a standard 56. The stem has a circumferential groove 57. A crank 58 has a pin 59 in the groove. The crank has a shaft 60 that projects through the wall of the float ClltlllP her, and fastened on its projecting end is a laterally disposed arm 61 that has a clip 62 holding a mercury switch 63. Normally the switch is tipped down, as shown in Figure 12, so that the mercury electrically connects the contacts in the switch.

The mercury switch per se forms no part of the present invention, so shall not be described other than to say that a body of mercury in the container electrically connects two contacts when the container is in one position and flows away from the contacts when the container is moved to another position.

Pivoted on the arm 61 is a trip lever 64, limited in movement by stops 65 and 66. A pivoted bar 67 is mounted on the exterior of the float chamber wall and adjacent the arm 61. A mercury switch 68 is clipped on the bar 67 and by reason of greater weight at the end of the bar carrying the switch, the bar tends by gravity to assume the position shown in Figure 12. A pin 69 on the lighter end of the bar is in the path of the lever 64.

As the arm 61 moves in the direction. of the arrow in Figure 12, the lever 64 is tripped and thereby slides by the pin 69. On the return or downward movement the lever 64 is in contact with the stop 65 and upon engagement with the pin 69 tips the bar 67 and consequently the switch 69. This tipping movement causes the mercury in the switch 68 to connect the contacts in the switch electrically. As soon as the lever 64 passes the pin 69, the bar 67 by gravity again assumes the position in which the mercury in the switch 68 does not connect the contacts.

The source of electric energy is indicated at 70, and two line wires 71 and 72 are shown connecting with opposite poles on the source.

Coin chutes 73, 74 and 75 lead to a common electric contact 76. Other contacts for the chutes are shown respectively at 77, 78 and 79. The common contact 76 is pivoted at 80 and carries a roller 81. A spring-urged dog 82 engages the roller 81 and tends to hold the contact 76 in a coin holding position.

An electro-magnet 83 is connected in the following circuit: the source, the line wire 71, Wire 1338, switch 68, wire 139, wire 140, line wire 72 and back to the source. The magnet 83 is disposed adjacent the dog 82, so that when the switch 68 is tipped to a circuit-closing position, the magnet attracts the dog, allowing the contact 76 to move to a coin-releasing position by gravity. This n'iagnet releases the coin at the proper time irrespective of which chute the coin is placed 1n.

The coin contacts 77, 78 and 79 are respectively connected to solenoids 84, 85 and 86 by wires 87, 88 and 89. The other poles of these solenoids are connected with the line wire 71 by wires 100, 103 and 104 respectively. These solenoids respectively control mercury switches 90, 91 and 92, which are connected in parallel between two wires 93 and 94. The

wire 93 connects with the line wire 71, and the wire 94 connects with a solenoid 95, which in turn is connected with the other line wire 72 by a wire 96.

The core of the solenoid 95 controls a switch 97, which connects with the line wire 71 by means of a wire 98 and with the switch 63 by a wire 99.

The circuit closed by a coin in engagement with contacts 76 and 77 is as follows: The source 70, the line wire 72, the contacts 76 and 77 (through the coin), wire '87, the solenoid 84, wire 100, the line wire 71 and back to the source. The solenoid 84 is thereby energized and tipsthe switch 90, which energizes the solenoid 95, whereby the switch 9 7 is allowed to tip, by mechanism hereinafter more fully described. This movement of the switch 97 closes the motor circuit as follows: The source, line wire 72, Wire 101, the motor, wire 102, switch 63, wire 99, switch 97, wire 98, line wire 71, and back to the source.

Coins engaging the contacts 78 and 79 close the switches 91 and 92 respectively. The motor circuit is closed at the beginning of the operation and the coin is released at the end of the operation irrespective of which of the switches 90, 91 or 92 is tipped. The circuits of the switches 91 and 92 are believed apparent from the foregoing description of the circuit closed by the switch 90.

The switches 90, 91 and 92 are respectively clipped on cranks 105, 106 and 107. These crank arms respectively operate recessed, outlet valves 108, 109 and 110 for the stand pipes 20, 21 and 22 respectively. Springs 166 hold the cranks in position in their bearings and prevent leakage between the lateral arms on the cranks and the abutting ends of bushings 194 around the cranks, the contacting surfaces being in fluid-tight engagement. Recess 168 for the valve 108 is shown in Figure 4. An outlet valve 111 for the measuring chamber controls an outlet 112, which leads into an outlet chamber 113. A spring 114 in the chamber 113 normally holds the valve 111 in an open position. The chamber 113 is connected with a flexible drain hose 117 by a stub pipe 118 and an elbow 119.

A vent pipe 170 connects the chamber 113 with the interior of the cap 41 through an opening 171. The cap 41 has a vent passage 172 for the measuring chamber.

When the solenoid 95 is energized, its core 143 operates a crank arm 116 on a crank 120, which in turn closes thevalve 111. The core 143 has a flange 144 which in its movement is disposed to engage a lug 145 on a pivoted mounting 146 for the switch 97. A spring 147 is disposed to tip. the mounting 146 and.

hence the switch 97 when the core 143 is raised by energization of the solenoid 95.

When this solenoid is deenergized, the core falls, thus tipping the switch back to the position shown in Figure 9. V i

A manually controlled outlet valve 220 controls an outlet 122 that drains liquid from the measuring chamber into an outlet passage 123, which in turn connects with the drain pipe 9. The float chamber 51 connects with the passage 123 by a drain opening 124 and by an overflow opening 142.

A crank 121 operates the valve 220. The crank has oppositely disposed arms 196 and 197. The arm 196 is connected with a part of the frame of the apparatus by a coil spring 198 that tends to hold the valve 220 in a closed position at all times. The other arm 197 projects through an opening 198 in the casing 13 and carries a hook 199 on the projecting portion for supporting nozzle 200 of the drain hose 117. A switch 201 is clipped on the arm 197.

The switch 201 is in the motor circuit, so that when the drain hose is hung on the hook,

the motor circuit is broken. When the noz-' zle of the drain hose is lifted from the hook, the spring 198 closes the valve 220 and tips the switch 201 to a circuit closing position.

-When the nozzle is replaced on the hook, any

An inlet passage 125 connects the inlet pipe 7 with the inlet pipe 136 in the measuring chamber.

Electric light bulbs may be provided at convenient places on the machine. Bulbs 126 are shown at opposite sides of the measuring chamber. Reflectors 127 reflect light from the bulbs toward the measuring chamber. A bulb 128 is provided in a casing 129 on the dome. Translucent plates of glass 130 are set in the casing at either side of the bulb 128. The plates are suitable for advertising matter.

Another bulb 131 is disposed above the coin slots. The bulbs are suitably connected in the circuit. Since per se they form no part of the present invention, the bulb-s have not been shown in the wiring diagram.

\Vhen the solenoid 95 is deenergized the crank arm 116 is prevented from assuming a position, in which the valve 111 is open, by an arm 150 of a bell crank 151, as best shown in Figure 14. The bell crank is pivoted on a bracket 152. Apertured ears 153 provide bearings for a pin 154 which is used in pivotally mounting the bell crank. A spring 155 has a cross member 156 that bears against the arm 150 and holds same against a stop 157 on the crank 116. An abutment 180 between the ears 153 also limits movement of the bell crank. The spring is wound around the pin 154 and the ends of the spring bear against the bracket 152 and are held in place by lugs 159.

An operating chain 148 hangs from an arm 160 on the bell crank. A finger ring 149 is suspended from the chain.

The contacts 77, 78 and 7 9 are spaced different distances from the contact 76 to be engaged by coins of different sizes, such as a silver dollar, a half-dollar and a quarter of a dollar respectively.

lVhen desired, the motor circuit may be manually closed, as when an attendant is in charge of the apparatus. The manual means includes a push button 182 exposed at the exterior. A longitudinally movable rod 183 is disposed tobe impelled when the button is pushed. One end of the rod 183 rests in a socketed member 184. To render the manual means inoperative, the rod 183 may be lifted from the member 184 and swung aside.

A lever 185 is pivotally connected with the other end of the rod 183. When the rod is impelled, the lever 185 raises a lever 186 that carries a pivoted contact pin 187, which abuts against a stop 188 on the lever 186 during inaction and when the pin is in a circuit closing position. The pin is connected with the line wire 71 by a wire 191, and to wire 94 by a wire 192.

The contact 76 has a projecting contact finger 189 disposed in the path of the pin 187. The pin has an insulated surface 190 that engages the finger 189 when moved in one direction. solenoid 95 by its return movement, which tips the switch 97 and closes the motor circuit.

If the wall of the measuring chamber be broken so that the chamber never fills, if the float 54 is not operative, or for some other reason the motor is not shut ofl", the motor will run continuously and pump all the liquid from the supply. As a precaution against this, automatic means are provided in the system for shutting off the motor after it has run a predetermined length of time; c. g., after it has run a short time longer than necessary to fill the measuring chamber to a level above the tallest stand pipe.

The means comprise an elbow pipe 203 connecting with the inlet pipe 7 in the housing 2. The pipe 203 empties into a bucket 204 hanging in a chamber 205. The pipe projects through an opening in the cover 206 of the chamber. An outlet 207 in the chamber is connected by a drain pipe 208 with the return pipe 9. The pipe 7 has a check valve 222 just above the inlet into pipe 203, to prevent liquid standing in the pipe 7 from running into the pipe 203, after the motor has stopped.

The bucket has a small drain opening 209 in the lower portion. The bucket is sus pended from a crank arm 210 by a bail 211. The crank arm 210 is on a spindle 212 that projects through a wall of the chamber. A packing gland 213, provides a bearing for the spindle and holds samein liquid tight connection with the chamber wall. The outer end of the spindle carries a crank'arm 214 projecting in an opposite direction to that of the crank-arm 210. The arm 214 has a sliding weight 215 held in the desired position by a set. screw 216. A switch 219, in the motor circuit is fastened on thearm 214 and tips to a circuit breaking position when sufficient liquid has flowed into the bucket.

A pawl 217 is disposed to hold the arm 214 in a raised position when the bucket is depressed by liquid pouring into same. A

, spring 218 tends to hold the pawl in such position.

It is believed clear that the above-described apparatus will provide an interval of time after the pump has stopped and before the liquid in the measuring chamber can be drained therefrom, to allow excess liquid to flow from the measuring chamber. This is afforded by holding the outlet valve 111 closed until after the excess in the measuring chamber has all flowed into the float chamber and the float allowed to descend.

A customer drops a coin in the appropriate slot, lifts the nozzle 200 from thehook 199 and places it inthe filler opening in his gasoline tank. Lifting the nozzle from the hook allows the switch 201 to be moved to a closed position.

The pin closes the circuit of the solenoid 95.

The latter solenoid when energized tips the switch 97 to close the motor circuit already described and closes the outlet valve 111.

The pump, driven by the motor, then draws liquid from the source of supply to the measuring chamber. The tipping of the switch 90 was efl'ected by raising the projecting portion of the crank 105. This movement of the crank opens the valve 108 in the stand pipe 20, so that liquid, overflowing into the stand pipe 20 at its top, flows in the overflow chamber 51.-

Since the inlet into the float chamber, controlled by the valve 108, is larger than the outlet 124, the float chamber fills and the float 54 is raised. The rising of the float tips the switch 63 through the medium of crank 60. This movement of the switch 63 breaks the motor circuit, thus stopping. the pump.

As the liquid in the float chamber drains therefrom, the float descends, which depresses arm 67 to tip the switch 68. The circuit of the magnet 83 is thereby closed, which attracts the dog 82 and allows the contact 76 to swing out of the path of the coin.

As soon as the coin is released, the solenoid 84 is deenergized, which allows the switch to return to an open position, which deenergizes the solenoid 95. Descending movement of the core 143 of the latter solenoid tips the switch 97 to break the moton-circuit again.

It will be noted that the switches 97 and 63 are connected in series in the motor circuit, so that either may break same. In the operation the coin is released, the solenoids 84 and95 deenergized and the motor circuit broken, by the switch 97, before the switch 63 moves to a closed position. Otherwise the motor would run continuously.

When the solenoid 95 was energized, it raised the crank arm 116, allowing the arm 150 of the bell crank to be moved thereunder by means of the spring 155 into engagement with the stop 157.

The bell crank in this position (shown in Figure 14) holds the-valve 111 shut even after the solenoid 05 Yisdeencrgized. The liquid in the measuring chamber is then ready to be drained through the hose 117.

Pulling the chain 148 by means of the ring 149 moves-the arm 150 from under the crank arm 116, thusallowing the latter to fall by gravity to open the valve 111.

If some trouble develops in the system whereby the motor is not shut off, liquid continues to flow through the elbow pipe 203 into the bucket 204. When the bucket is filled to a predetermined level, it descends, which'raises the arm 214, which in turn tips the switch 219 to a circuit breaking position. Vhen the arm 214 is in the raised position, the pawl 217 moves under same to prevent the arm from descending until the pawl is manually moved out of its path. Liquid gradually drains from the bucket through the opening 209.

It will be apparent from the foregoing that simple and eflicient time controlled means are thus provided for shutting off the motor after a predetermined period in case the system fails to operate properly. The motor may of course be shut off at the same time that the liquid should reach the desired level. By adjusting the weight 215, the period may be varied.

The operation of the manual circuit closer is as follows: Pushing the button 182 impels the rod 183, which moves the lever 185. The lever 185 in turn lifts the lever 186' and its pin 187. i

As the pin'brushes' by the finger 189 on its upward movement, the insulation 190 prevents the closing of the circuit for the solenoid 95.

When the button 182 is released, thepin descends and rests on the finger 189, where it closes the circuit of the solenoid 95, thus tipping the switch 97 and closing the motor circuit, which remains closed until the pump has filled the measuring chamber and overflows through the continually open pipe 52. The overflow raises the float, thus shutting off the motor. As the float descends,- the magnet 83 is energized, which allows the contact 76 to move out of the path of the pin 187, thus breaking the motor circuit before the switch 63 resumes its closed position.

It is clear that the heights of the columns in the measuring'chamber maybe varied to keep abreastof price fluctuations by inserting a screw driven through the apertures 46 and turning the heads 42. 7

Changes may be made in the details ofconstruction and in the combinations and arrangements of parts without departing from the spirit of the invention. Furthermore, I do not wish to be limited except as specifically stated in the hereunto appended claims.

What I claim and desire to secure by Letters Patent is:

1. In an apparatus for dispensing liquids, a liquid supply, a measuring chamber, a pump to transfer liquid from the supply to the measuring chamber, a motor for the pump, a circuit for the motor, two switches connected in series in said circuit, one switch being normally in a circuit breaking position, the other switch being normally in a circuit closing position, a coin controlled circuit adapted to r i the return of the float move the first noted switch to a circuit closing position whereby to actuate the pump, and a float controlled by overflowing liquid pumped to the measuring chamber, to move the second noted switch to a circuit breaking position at a predetermined point in the operation of the apparatus.

2. In an apparatus for dispensing liquids, a liquid supply, a measuring chamber, a pump to transfer liquid from the supply to the measuring chamber, a motor for the pump, a circuit for the motor, two switches connected in series in said circuit. one switch being normally in a circuit breaking position, the other switch being normally in a circuit closing position, a coin controlled circuit adapted to move the first noted switch to a circuit closing position whereby to actuate the pump, a float controlled by the overflow of liquid pumped to the measuring chamber to move the second noted switch to a circuit breaking position and then back to a circuit closing position at a predetermined point in the operation of the apparatus, and a circuit closed by to normal position to break the said coin controlled circuit and admit of the first noted switch moving to a circuit breakingposition before the second noted switch is returned to a circuit closing position.

' 3. In an apparatus for dispensing liquids, a liquid supply, a measuring chamber, a pump to transfer liquid from the supply to the measuring chamber, a motor for the pump, a circuit for the motor, a normally closed switch for the circuit, a movable contact for the circuit, a switch controlling said contact, and float mechanism, operated by liquid pumped into the. measuring chamber, connected to move the first noted switch to a circuit breaking position, at a predetermined point in the operation of the apparatus, by the rising movement of the float, and connected to operate the second noted switch whereby said contact is moved to a circuit breaking position by descending movement of the float.

4. In an apparatus for dispensing liquids, a liquid supply, a measuring chamber, a pump to transfer liquid from the supply to the measuring chamber, a motor for the pump, a circuit for the motor, a normally closed switch for the circuit, a movable con tact for the circuit, a switch controlling said contact, float mechanism, operated by liquid pumped into the measuring chamber, connected to move the first noted switch to a circuit breaking position, at a predetermined point in the operation of the apparatus, by movement of the float, and mechanism to move the second noted switch by movement of the first noted switch, whereby the contact is moved to a circuit breaking position.

5 In an apparatus for dispensing liquids, a liquid supply, a measuring chamber, a pump to transfer liquid from the supply to the contact is moved the measuring chamber, a motor for the pump, a circuit for the motor, a normally closed switch for the circuit, a movable contact for the circuit, a switch controlling said contact, float mechanism, operated by liquid pumped into the measuring chamber, connected to move the first noted switch to a circuit breaking position, at a predetermined point in the operation of the apparatus, by movement of the nism to move the second noted switch by movement of the firstnoted switch, whereby to a circuit breaking position.

6. In an apparatus for dispensing liquids, a liquid supply, a measuring chamber, a pump to transfer liquid from the supply to the measuring chamber, a motor for the pump, a circuit for the motor, a valve for the measuring chamber, electro-magnetic means holding the valve in a closed position during the pumping operation, mechanical mechanism holding the valve closed after the pump has ceased operation, and means accessible to a user to release the mechanical mechanism.

7. In an apparatus for dispensing liquids, a liquid supply, a measuring chamber, a pump to transfer liquid from the supply to the measuring chamber, a motor for the pump, a circuit for the motor, a valve for the measuring chamber, el-ectro-magnetic means holding the valve in a closed position during the pumping operation, mechanical mechanism including a lever holding the valve closed after the pump'has ceased op eration, and means accessible to a user torelease the mechanical mechanism.

8. In an apparatus for dispensing liquids, a liquid supply, a measuring chamber, a pump to transfer liquid from the supply to the measuring chamber, a motor for the pump, a circuit for the motor, a valve for the measuring. chamber, electro-magnetic means holding the valve in a closed position during the pumping operation, mechanical mechanism including a spring-urged lever holding the valve closed after the pump has ceased operation, and means accessible to a user to release the mechanical mechanism.

9. In an apparatus for dispensing liquids, a liquid supply, a measuring chamber, a pump to transfer liquid from the supply to the measuring chamber, a motor for the pump, a circuit for the motor, a valve for the measuring chamber, spring-urged mechanism disposed when set to hold the valve closed, electro-magnetic means connected to set said mechanism in the operation of the apparatus, and means accessible to a user to release the mechanism after the pump has ceased operation.

11 an apparatus for dispensing liquids, a measuring chamber, a liquid from the supply to 10. I a liquid supply, pump to transfer float, and trip lever mechathe measuring chamber, a motor for the pump, a circuit for the motor, a switch for said circuit, spring means tending to hold the switch in a circuit closing position, an outlet valve for the measuring chamber, and an electro-magnet connected to hold the switch in a circuit breaking position when deenergized and connected to close said valve and release the switch when energized.

11. In an apparatus for dispensing liquids, a measuring chamber, means to supply liquid to the chamber, a pipe for controlling the quantity of liquid in the chamber, and adjusting mechanism for the pipe comprising an adjustable section carrying a nut, a threaded rod screwed in the nut, gear means for rotating the rod, and means to prevent the nut from rotating with the rod during adjustment.

12. In an apparatus for dispensing liquids, a liquid supply, a measuring chamber, a pump to transfer liquid from the supply to the measuring chamber, a motor for the pump, a circuit for the motor, two movable contacts in the circuit, one of the contacts being disposed and connected to move into engagement with the other contact when actuated, manual means for actuating the former contact, and mechanism controlled by liquid pumped into the measuring chamber to automatically move the latter contact out of engagement with the former at a predetermined point in the operation of the apparatus.

13. In an apparatus for dispensing liquids, a liquid supply, a measuring chamber, means to transfer liquid from the supply to the measuring chamber, a stand pipe for determining the level of liquidv in the measuring chamber and adapted to be filled by liquid from the measuring chamber, the pipe having an aperture to drain liquid from the pipe into the chamber, and means to draw liquid from the measuring chamber.

14. In an apparatus for dispensing liquids, a liquid supply, a measuring chamber, a pump to transfer liquid from the supply to the measuring chamber, a motor for the pump, a circuit for the motor, a switch in the circuit, means to automatically shut ofi the motor after the liquid in the measuring chamber has reached a predetermined level, and automatic time-controlled means, adapted to be pre-set, for moving said switch to a circuit breaking position after a predetermined time after the liquid in the measuring chamber should reach said level.

15. In an apparatus for dispensing liquids, a liquid supply, a measuring chamber, a pump to transfer liquid from the supply to the measurin chamber, a motor for the pump, a circuit fbr the motor, a switch in the circuit, means to automatically shut off the motor after the liquid in the measuring chamber has reached a predetermined level, and automatic time-controlled means operated by liquid being pumped ,and adapted to be preset, for moving said switch to a circuit breaking position after a predetermined time after the motor is normally shut off by liquid in the measuring chamber.

In testimony whereof I hereunto signature.

LEWIS P. STARKEY. 

